/*
 *  Java OTR library
 *  Copyright (C) 2008-2009  Ian Goldberg, Muhaimeen Ashraf, Andrew Chung,
 *                           Can Tang
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of version 2.1 of the GNU Lesser General
 *  Public License as published by the Free Software Foundation.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package ca.uwaterloo.crysp.otr.crypt.rim;

import net.rim.device.api.crypto.DSAPrivateKey;
import net.rim.device.api.crypto.DSACryptoSystem;

/**
 * Wrapper class for the DSA signing (private) key using the RIM provider.
 * 
 */
public class RIMDSAPrivateKey extends RIMDSAKey implements
        ca.uwaterloo.crysp.otr.crypt.DSAPrivateKey {

    private DSAPrivateKey pk;

    /**
     * Constructs the wrapping instance of the given DSA private key using the
     * RIM provider.
     * 
     * @param pk
     *            the DSA private key.
     */
    public RIMDSAPrivateKey(DSAPrivateKey pk) {
        this.pk = pk;
    }

    public DSACryptoSystem getDSAParams() {
        return pk.getDSACryptoSystem();
    }

    /**
     * Returns the JCA instance of the DSA private key.
     * 
     * @return the JCA instance of the DSA private key.
     */
    public DSAPrivateKey getDSAPrivateKey() {
        return pk;
    }

    public byte[] getX() {
        try {
            return RIMMPI.toBytes(pk.getPrivateKeyData());
        } catch (Exception e) {
        }
        return null;
    }

    public String getValue() {
        return pk.toString();
    }
}
